STIG V-277113 | The macOS system must disable iCloud ...

macOS 26 - Tahoe

The macOS system must disable iCloud Photo Library

STIG ID: APPL-26-002043 | SRG: SRG-OS-000095-GPOS-00049 | Severity: Medium | CCI: CCI-000381 | Vulnerability ID: V-277113

Description

The macOS built-in Photos.app connection to Apple's iCloud service must be disabled.

Apple's iCloud service does not provide an organization with enough control over the storage and access of data and therefore, automated photo synchronization must be controlled by an organization-approved service.

Check

C-81268r1148789_chk

Verify the macOS system is configured to disable the iCloud Photo Library with the following command:

/usr/bin/osascript -l JavaScript << EOS
$.NSUserDefaults.alloc.initWithSuiteName('com.apple.applicationaccess')\
.objectForKey('allowCloudPhotoLibrary').js
EOS

If the result is not "false", this is a finding.

Fix

F-81173r1148790_fix

Configure the macOS system to disable the iCloud Photo Library by installing the "com.apple.applicationaccess" configuration profile.